I wrote:
--vendor=fedora should not be used for new packages, use
--vendor="" instead
to get desktop-file-install to install the .desktop file without prepending a
vendor prefix.
PS: See
https://fedoraproject.org/wiki/TomCallaway/DesktopFileVendor for the
relevant guideline change, it got approved by FPC on 2008-10-21 and by FESCo on
2008-10-22, but the Packaging/Guidelines page hasn't been updated yet.
Kevin Kofler